Vegetable dye and method of preparing the same.



UNITED srAlrE-s rATnnr-r Isroonxrrsnn, or PHILADELPHIA,

VEGETABLE DYE AND Mnrnon or rnnrnn i're" rnn sum.

10 Drawing.

.To all whom it may concern:

Be it known that I, IsmoaKrrsnn, a citizen of the United States, residing at Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Vegetable Dyes and Methods of Preparing the: Same, of which the-following is a full, clear, and exact descr tron.

y invention relates to logwood or like vegetable dyes. The object of the invention is to produce a vegetable dye by the use n which yarns and textile goods generally may be dyed in various colors and in what known as fast colors.

I have discovered that by the addition to a logwood or other vegetable dye (preferably a purified dye) of two metallic compounds, one at least of which carries an difl'erent shades of black, blue, brown,-

yellow and red-may be obtained, and that the color will remain practically. unchanged, that is, fast in washing. a

The difiierent shades and colors may be 'nried by -varying the proportions of the two compounds relatively to each other and to the logwooddye solution and also by "carryingthe metal base.

The following examples may be given of practicable ways of carrying out my im-.

proved process. y

I it is desired to'dye goods black: To T00 parts by weight of a logwood dye solution {which preferably is purified by the addition thereto of from lto. 10 parts of sulfurous acid in accordancefwith my pending application Serial No-. 5 9,,759, filed November 5, 3915) are addedf? parts of a concen-- trated solution chlorid of zinc and i 5 parts of a concentrated solution of cop. 'e'r ammonium chlorid. The chlorid of zmc may be added-tattle dyesolu'tion at any time after the latter is prepared, but the copper ammoniumchljori fd should not be added until just before it is desired to dye the goods.

The process m'ay be carried out at ordinary temperatures; After the goods are dyed, they may be developed in blchromate and nitrate of potassium, or in any other suit- 1 11135.- able developing substance, for the purpose and in the manner well known in the art;

this step forming no part of my invention. To dye goods blue, the following example me be given:

ye solution, 100 parts.

Swim Pat nted Jan. 29, 19181. Application file November 26,1915. Serial M 635%? Chlorid of zinc (concentrated solution), 3 parts.

Copper ammonium chlorid (concentrated solutlon), 6 parts.

The dyed goods should preferably be 'de- I veloped in sulfate of copper.

If, for 'a chlorid of zinc, a chlorid-0f tin be substituted, a red color may be produced. To produce a brown color, hydrochloric acid may be added:

the proportion of the zinc salt, the darker the shade of black, and the greater the-proportion of ammoniated copper, the lighter 'the shade of.blue.- I

Having now fully described my invention, what I claim and desire to protect'my' Letters Patent is: v Y

z 1. The method of producing fast dyes which consists in adding to a vegetable base,

chlorids of two different metals, one of said metals being combined also with an alkali. 2. The method of producing fast dyes which consists in'adding to a vegetable base a metallic chlorid and a metallic ammonium chlorid.

' 3. The method of producing fast dyes which consists inadding to a vegetable base, chlorid of zine and ammonium copper chlorid.

. 4;. As a new composition of matter, a dye comprising a vegetable base and chlorids of two different metals one o bined' with an alkali.

5., As a new composition of matter, a, dye

which is comcomprising a vegetable base, a metallie- I chlorid and a metallic ammonium chlorid.

6. As a new composition of matter, a dye comprising a vegetable base, chlorid of zinc and ammonium copper chlorid.

In testimony of which invent on I have hereunto set my hand at Philada, on this r 23" day of Nov.,1915;

. moon KITSEE.

Witness:

Jenn J. 

